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Fuenkli

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Everything posted by Fuenkli

  1. not sure. It just stopped working and the company he called to fix it told him that it is cheaper to just buy a new unit instead of trying to repair it.
  2. Can load shedding damage electrical equipment? My motorbike buddy lost 2 garage door motors recently. He is convinced that it is because of load shedding. The insurance company has a different view and refuses to pay. What exactly happens at the moment of disconnection and reconnection to the grid parameters? My view is that the frequency will not be affected. I also believe that during reconnection the voltage will not be able to spike because of the huge load on the grid after load shedding. So if I am right the only problem could be low voltage for a while. Can this lead to damages to electrical equipment or is there other issues I am not aware of?
  3. it took me 9 month. But I had the >3.5kVA problem. I think now it would be quicker.
  4. you can legally connect more inverter output power to the grid. I am on a 60A single phase grid supply and restricted to only 3.5kVa. This is just about sufficient for my small household. But the moment "feed in" becomes financially viable (I hope soon ) much bigger systems will be required. It will then pay to completely cover your roof space with panels. In my case I could install about 15kWp of solar generation.
  5. I recall your problem. Did you ever get an answer from Revov why the battery would sometimes disconnect without a communication link?
  6. I agree. If the inverter has the capability to communicate with the specific BMS you obviously want to make use of it. But there is a lot of inverter/Battery combination out there who can not communicate with each other at the moment. But (based on my experience) If the inverter has accurate SOC calculation and is programmed in line with the appropriate battery charge and discharge parameters the system will work well even without a direct communication link between the inverter and the battery.
  7. There is inverters (like Goodwe) who have current measuring capability on the battery input and do not rely on the voltage to determine the SOC of the batteries.
  8. another point I realize now in hindsight I should have done is to get a 3 phase grid supply
  9. I have recently build a new house. To simplify a PV installation I found the following issues important in addition to what @Gerrie said: 1. Plenty of conduits to run the PV electrical cables (AC and DC must be in separate conduits) 2. Separate DB board for AC and DC 3. Electrician to wire the house based on an agreed to and signed off house wiring plan (with special emphasis on what is on the essential and non essential circuits and home automation requirements) 4. As many individual circuits/circuit breakers as financially possible (will facilitate flexibility what can be moved/changed later on from essential to non essential circuits or vice versa 5. Electrician to label all cables 6. High electricity consuming appliances (Geysers, Heat Pumps, Pool pumps, Aircons etc.) to be remote controlled 7. Conduits for ethernet network/Alarm system/CCTV cameras etc. throughout the house.
  10. I just had a look at my SEMS station (see below). I am not sure why SEMS looks different when it displays your station. Maybe other Goodwe users can check ( @Bobster?). You can also consider contacting Goodwe support to get to the bottom of this. .
  11. disappointing . @Rautenk do you maybe have Ryno's tel number? below are the contact details of the people who handled my registration: Shiraaz Swartland (Pr Tech Eng) Principal Professional Officer: Service Connection Planning (SCP) – North Tel: 021 444 2177 | Fax: 086 696 6068 | Cell: 083 324 2908 | Email: [email protected] | Web: www.capetown.gov.za Fadeelah Kenny Service Connection Planning PPO - East Tel: 021 444 0064 | Email: [email protected] Yonela Makuleni Distribution Systems Development - EAST Electricity Services Head Office, Bloemhof Complex, Bellville Tel: 021 444 8532 cell: 073 605 7988
  12. have a look here: https://powerforum.co.za/topic/5165-circumventing-the-coct-35kva-limit/
  13. in the window showing the total generation (big blue circle) there should be a field (on the left) where you can choose "Energy Flow" or "Devises" to me it looks like you are displaying the "Devises" and not the "Energy Flow". So if this is the case just click on the "Energy Flow" tab
  14. yes it is. Without the EZ Meter (Goodwe name for the current measuring devise on the grid supply) the inverter will not be able to determine the current flowing in or out of the grid.
  15. I agree. In this situation it makes financial sense to go "off grid" with a PV system and a back up generator.
  16. My advice is not to invest into a PV system of any kind at the moment (except if it is your hobby or you passionately feel about your CO2 emissions). The ROI (even for a GTI without batteries) is at the moment simply to long. To combat load shedding is however a different story. We will have years (maybe decades) of load shedding ahead. So to invest into a small back up system I think is essential. I would install a small Axpert type inverter with about 2kWh of lithium batteries. There is also a good chance that some kind of government or municipality residential PV subsidy program will be launched soon. If that happens and ROI becomes attractive you can sell your UPS inverter and upgrade to a proper grid tied Inverter and solar panels.
  17. based on my experience they will. To make sure you are not running into problems I would however contact the CoCT to confirm. [email protected]
  18. I have a Goodwe 4.6kW ES inverter. As a result of the SSEG registration problems I experienced (inverter > 3.5kWA on a single 60A supply) I almost considered changing to Victron because you can software limit the maximum output. This is not possible with the ES Goodwe inverters at the moment. So this is another issue potential buyers must take into consideration. Another difference is the higher maximum DC voltage input the Goodwe has compared to the Victron MPPT's. The longer panel strings possible with the Goodwe simplifies the installation and reduces cost.
  19. another option is to approach your municipality and try to get a token to deactivate the reverse flow/tampering feature of the meter.
  20. are you sure it is the inverter and not your prepaid meter tripping? Some prepaid meters trip even if the inverter has been set to zero export.
  21. thank you very much for the answers. It is very helpful. Because the Goodwe inverter can not signal islanding mode there is really no solution to solve this problem to comply with SANS. I will take this up with Goodwe and advice.
  22. correct. This is very much in line with what I have measured on my side as well. Our back up output neutral is floating . I am still wondering how dangerous this really is? I assume the RCD would prevent a dangerous current from flowing to earth.
  23. thanks for letting us know. Unfortunately we still have the floating neutral problem with the Goodwe. What are you going to do? As a short term (illegal) solution I am going to permanently bond neutral to earth on the back up output. I am not comfortable to have a potentially lethal voltage on my neutrals. As a long-term solution I will add an external neutral to earth bonding relay.
  24. This is a new feature. My inverter specification does not list "Max Apparent Power from Utility Grid (VA)". Thanks for pointing it out. I am not sure what it refers to. It could be the maximum pass through power to the back up output when the grid is available. I am however still certain that the inverter can only generate 4.6kW.
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